A taxi cab reportedly picked Young up from the medical center. At some point, Ray said, Young got into her car and started driving home.

About 2:30 p.m., Young is believed to have suffered another seizure while driving on Southwest 185th Avenue in Aloha, Ray said. She lost control of her vehicle, striking and killing McGregor, who was walking along the sidewalk.

On Tuesday, a Washington County grand jury indicted Young on an accusation of second-degree manslaughter. She was arrested Wednesday and lodged in the Washington County Jail, with bail set at $250,000.

Max McGregor was killed after he was struck by a car while walking on Southwest 185th Avenue Tuesday afternoon. He was interested in engineering and wanted to design airplanes. McGregor family photograph

“It was very clear to her to not drive,” Ray said. “She recognized the danger in driving. She disregarded the danger. Drove anyway. And shortly there after had another seizure and drove up on the sidewalk and killed Mr. McGregor.”

On Wednesday, McGregor's mother, Peggy, released a statement about the arrest.

“I am
thankful the grand jury and District Attorney recognize that not only drugs and
alcohol can impair a person's ability to drive a car," she said. "You can be impaired when
you have an unsafe medical condition. If the driver had simply listened to her
doctor, my son Max would still be alive today.”

McGregor had gotten onto a TriMet bus that afternoon, headed home from school. He rode the bus to his stop on Southwest 185th Avenue near Sandra Lane.

Moments after the 17-year-old stepped onto the sidewalk, his backpack in tow, he was struck by a car, which traveled off the roadway, Michael Zeuthen, a family friend, said after the incident. McGregor died at the scene, blocks from home.

Traveling south on 185th Avenue in a 1994 Toyota Tercel, Young first struck McGregor, then two fences and finally a house, according to the sheriff's office. McGregor was walking north on the west side of the road when the Tercel hit him.

The car reportedly caused minor structural damage to the home. No one inside was injured.

On the afternoon of the crash, a neighbor told The Oregonian that it appeared as if the driver of the car suffered a seizure. Young was taken to a local hospital for treatment of minor injuries, authorities said.

McGregor, a junior at Health and Science School, was interested in engineering. He wanted to design airplanes and sketched blueprints in his down time. He had attended the magnet school since he was in ninth grade, the Beaverton School District said.